package Demo1;

class Student{
    //私有属性name
    private String name = "bit";
    //公有属性age
    public int age = 18;
    //不带参数的构造方法
    public Student(){
        System.out.println("Student()");
    }

    private Student(String name,int age) {
    this.name = name;
    this.age = age;
    System.out.println("Student(String,name)");
    }

    private void eat(){
    System.out.println("i am eat");
    }

    public void sleep(){
    System.out.println("i am pig");
    }

    private void function(String str) {
    System.out.println(str);
    }

    @Override
    public String toString() {
    return "Student{" +
    "name='" + name + '\'' +
    ", age=" + age +
    '}';
    }
}
public class Test {
    public static void main(String[] args) {
        Class<?> c1 = null;
        try {
            c1 = Class.forName("Demo1.Student");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }

        Class<?> c2 = Student.class;

        Student student = new Student();
        Class<?> c3 = student.getClass();

        // Class 对象只有一个
        System.out.println(c1 == c2);// true
        System.out.println(c2 == c3);// true
    }
}
